1001200001212 has 12 divisors (see below), whose sum is σ = 1762227749016. Its totient is φ = 497706358640.

The previous prime is 1001200001173. The next prime is 1001200001213. The reversal of 1001200001212 is 2121000021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001200001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723409714 + ... + 723411097.

It is an arithmetic number, because the mean of its divisors is an integer number (146852312418).

Almost surely, 2^{1001200001212} is an apocalyptic number.

It is an amenable number.

1001200001212 is a deficient number, since it is larger than the sum of its proper divisors (761027747804).

1001200001212 is a wasteful number, since it uses less digits than its factorization.

1001200001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446820988 (or 1446820986 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001200001212 its reverse (2121000021001), we get a palindrome (3122200022213).

The spelling of 1001200001212 in words is "one trillion, one billion, two hundred million, one thousand, two hundred twelve".